The Arizona state prison where the nearly two hour execution of Joseph Rudolph Wood took place on Wednesday is photographed in Florence, Ariz. Wood was convicted in the 1989 shooting deaths of Debbie Dietz, 29, and Gene Dietz, 55, at an auto repair shop in Tucson. (AP Photo)

John Zemblidge, right, of Phoenix, leads a group of about a dozen death penalty opponents in prayer as they protest the possible execution of Joseph Rudolph Wood at the state prison in Florence, Ariz. on Wednesday. Arizona's highest court on Wednesday temporarily halted the execution of the condemned inmate so it could consider a last-minute appeal. The Arizona Supreme Court said it would consider whether he received inadequate legal representation at his sentencing. The appeal also challenges the secrecy of the lethal injection process and the drugs that are used. (AP Photo)

This photo provided by the Arizona Department of Corrections shows inmate Joseph Rudolph Wood. The U.S. Supreme Court on Tuesday allowed the Arizona executionof Wood to go forward amid a closely watched First Amendment fight over the secrecy surrounding lethal injection drugs in the country. (AP Photo/Arizona Department of Corrections)